Your high school situation is not the issue -- the problem here is that you cannot be accepted to a US medical school with a bachelor's degree from overseas. Foreign university studies are not accepted as premedical work in the States.
If you want to get into a medical school in the US you will need to complete all of the premedical science courses at a US college/university, and you will probably need to complete a US bachelor's degree (or at least 90 credits) in order to be eligible. Sorry, but the PI degree doesn't count. You will also need to take the MCAT and go through the application process. Of course, this is assuming that you have US citizenship (born in CA, right?).
"To array a man's will against his sickness is the supreme art of medicine."
- Henry Ward Beecher